#!/usr/bin/env python
# -*- coding: utf-8 -*-

# @Time     :2022/03/03
# @Author   :Changshu
# @File     :Exercise6.py
# 7. 整数反转

if __name__ == '__main__':
	# s='abcdefghijklmn'
	# print(s)
	# print(s[len(s)::-1])

	# s='000aaa---'
	# print(s.lstrip('0').rstrip('-'))
	print(2**31-1)
	# print((2**31)-1)
	print(9646324351>2147483647)